Apparatus for manufacture of objects from plastic substances.



v 0. BBERHARD. APPARATUS FOR MANUFACTURE CF OBJECTS FROM PLASTICSUBSTANCES. APPLICATION FILED JUNE 5, 1913.

1,095,97 19.. Patented May 5, 1914.

A fro /vfrs UNITED STATES PATENT OFFICE.

OTTO EBERHARD, OF HEIDENAU, NEAR DRESDEN, GERMANY.

APPARATUS FOR MANUFACTURE O13 OBJECTS FROM PLASTIC SUBSTANCES.

Original application filed January 30, 1913, Serial No. 745,177. Dividedand this application filed June 5, I

Specification of Letters Patent.

Patented May 5,- 1914.

1913. Serial N0. 771,890.

The present application is a division of.

application Serial No. 745,177 filed by me January 30, 1913, and theinvention relates to an apparatus for the continuous mechani-' calmanufacture of objects from plastic substances with a permanent pattern,changeable as desired, such substances being advantageously of anorganic nature such as artificial horn and the like, the manufacturebeing effected by pressure devices. It is already known in themanufacture of pat- .terned objects such as soaps, sweets, to causediversely colored streams manufactured by separate presses to passthrough a mandrel or die and to unite them to a single cord underconstant pressure. The present invention difi'ers therefrom essentiallyin the fact that the diversely colored separate streams coming from theseparate presses, are led together to a chamber provided with mixing ordeviating devices and leave the latter as apatterned combined stream.These inserted elements obstruct the smooth passage of the streams sothat corresponding changes in position and consequently modification ofthe' pattern are effected. The same arrangement of the elements willnaturally always give the same pattern. In order to attain a greatervariety the inserted elements can be constantly actuated by a device.This again enables the same pattern always to be obtained or to berepeated by causing a certain inserted element to .rotate at a certainnumber of revolutions.

The new device consists of a suitable num ber of stream presses openinginto a chamber provided with stationary or movable mixing or deviatingdevices and comprising outlets for the patterned combined stream.

In the accompanying drawing several embodiments of the invention areillustrated.

Figure 1 shows a triple press in horizontal section. Figs. 2,4 and 5show three diiferpent constructions of a mixing chamber of a doublepress, in horizontal section. Fig. 3

is an end view of the inserted element of Fig. 2. Figs. 6 and 7 show twodifferent constructions of a perforated disk located at the outlet endof the mixing chamber.

In the construction of Fig. 1, there are three separate presses whichare provided in the usual manner with conveying worms and open into thecommon mixing chamber 4. The latter is provided with a mixing elementsuch as a slowly rotating worm 5 driven by the pulley 6. The worm 5 doesnot serve to conv ey the substances like the worms in the presses 1 to 3because this is already elfected by the pressure exerted on the separatestreams of the presses 1, 2 and 3 which unite in the mixing chamber 4.

The worm 5 of the latter chamber rather serves to produce a certain kindof spiral pattern as each rib of the worm efiects on passing before theinlets a certain deviation. Thus the various streams are continuouslydivided by the worm 5 in diil'erent ways. The slowly rotating worm 5 cantherefore be replaced by other. mixing elements.

In Fig. 2, a cross 7 instead of the mix- Y ing worm, is inserted in themixing chamher 4 and in this case, streams only from two separatepresses 1, 2 unite. The cross 7 can also be slowly rotated and acts inmanner different from that of the worm 5 of Fig. 1, on the combinedstream leaving the mixing chamber. A row of such crosses or starlikestructures can be arranged in series in Y the mixing chamber as shown inFig. 4. In the latter case there are three crosses 8, relativelystaggered and mounted in series on the same shaft in the mixing chamber4."

As said before, the inserted elements may instead of being rotatable, bestationary or movable in a different manner. In Fig. 5 there arestationary inserted elements 9 arranged within the mixing chamber 4 andconsisting of rods or other projections. The outlets of two presses 1, 2open into the mixing chamber, one of them being provided with threespouts 10. It is evident that the mixing elements can be of any shapeprovided that they produce a deviation of the separate coloredsubstances lying beside one another, whereby a certain pattern isobtained. The pattern of the combined stream leaving the mixing chamber4 can be still further influenced by providing perforated disks 11 atthe outlet end of the chamber, two constructions there combined stream,mixing means arranged in said chamber, comprising a turning shaft andarms fastened on said shaft,engaging 15 and mixing 0r deviating thestreams led into the chamber.

In testimony whereof I aflix my signature in presence of two Witnesses.

OTTO EBERHARD.

Witnesses PAUL AREAS, CLARE SIMON.

